LeonaBio, Inc. SEC filings LONA
LeonaBio, Inc. has 469 filings in SEC EDGAR's recent list, going back to Oct 3, 2014. Its latest annual report, Form ARS, was filed on May 11, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 14, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 22, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 4, 2026 | — |
| 4 | Insider transaction | Oct 28, 2026 | Oct 26, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Oct 28, 2026 | — |
| 4 | Insider transaction | Oct 26, 2026 | Oct 26, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Oct 26, 2026 | — |
| 3 | Initial insider ownership | Sep 3, 2026 | Aug 24, 2026 |
| SCHEDULE 13D | Ownership over 5% (active) | Aug 31, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 25, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 20, 2026 | — |
| 4 | Insider transaction | Jul 10, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Jul 9, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 23, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 5, 2026 |
| 3 | Initial insider ownership | May 7, 2026 | May 5, 2026 |
| 3 | Initial insider ownership | May 7, 2026 | May 5, 2026 |
| 3 | Initial insider ownership | May 7, 2026 | May 5, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | May 7, 2026 | — |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 144 | Notice of proposed sale | Mar 4, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 6, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jan 16, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 8, 2026 | — |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Dec 29, 2025 | Dec 24, 2025 |
| 4 | Insider transaction | Dec 29, 2025 | Dec 24, 2025 |
| 4 | Insider transaction | Dec 29, 2025 | Dec 24, 2025 |
| 4 | Insider transaction | Dec 29, 2025 | Dec 24, 2025 |
| 4 | Insider transaction | Dec 29, 2025 | Dec 24, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 23, 2025 | — |
| 4 | Insider transaction | Dec 23, 2025 | Dec 23, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Dec 23, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 22, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 18, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 10, 2025 | — |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 144 | Notice of proposed sale | Jul 1, 2025 | — |
| 144 | Notice of proposed sale | Jul 1, 2025 | — |
| 144 | Notice of proposed sale | Jul 1, 2025 | — |
| 144 | Notice of proposed sale | Jul 1, 2025 | — |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 16, 2025 | — |
| 4/A | Filing | Mar 12, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 144 | Notice of proposed sale | Jan 2, 2025 | — |
| 144 | Notice of proposed sale | Jan 2, 2025 | — |
| 144 | Notice of proposed sale | Jan 2, 2025 | — |
| 144 | Notice of proposed sale | Jan 2, 2025 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 7, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Oct 31, 2024 | — |
| 4/A | Filing | Oct 3, 2024 | Oct 3, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 3, 2024 |
| 3 | Initial insider ownership | Oct 3, 2024 | Oct 1, 2024 |
| 144 | Notice of proposed sale | Sep 5, 2024 | — |
| 4 | Insider transaction | Sep 5, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Jun 25, 2024 | Jun 21, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 24, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 24, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 24, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 24, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 24, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 24, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 24, 2024 |
| 4 | Insider transaction | Apr 16, 2024 | Apr 15, 2024 |
| 3 | Initial insider ownership | Apr 16, 2024 | Apr 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4/A | Filing | Feb 16, 2024 | Jan 4, 2024 |
| 4/A | Filing | Feb 16, 2024 | Jan 4, 2024 |
| 4/A | Filing | Feb 16, 2024 | Jan 4, 2024 |
| 4/A | Filing | Feb 16, 2024 | Jan 4, 2024 |
| 4/A | Filing | Feb 16, 2024 | Jan 4, 2024 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| 4 | Insider transaction | Jan 8, 2024 | Jan 4, 2024 |
| 4 | Insider transaction | Jan 8, 2024 | Jan 4, 2024 |
| 4 | Insider transaction | Jan 8, 2024 | Jan 4, 2024 |
| 4 | Insider transaction | Jan 8, 2024 | Jan 4, 2024 |
| 4 | Insider transaction | Jan 8, 2024 | Jan 4, 2024 |
| 4 | Insider transaction | Jan 8, 2024 | Jan 4, 2024 |
| 4 | Insider transaction | Dec 29, 2023 | Dec 27, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 29, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 7, 2023 | — |
| 4 | Insider transaction | Jun 9, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 6, 2023 | Jun 2, 2023 |
| 4 | Insider transaction | Jun 6, 2023 | Jun 2, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 19, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 19, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 19, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 19, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 19, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 19, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 19, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 18, 2023 |
| 3 | Initial insider ownership | May 22, 2023 | May 18, 2023 |
| SC 13G | Ownership over 5% (passive) | Apr 20, 2023 | — |
| 4 | Insider transaction | Mar 31, 2023 | Mar 29, 2023 |
| 4 | Insider transaction | Mar 30, 2023 | Mar 29, 2023 |
| 4 | Insider transaction | Mar 27, 2023 | Mar 24, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2023 | — |
| 4 | Insider transaction | Jan 31, 2023 | Jan 27, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 30, 2023 | — |
| 4 | Insider transaction | Jan 23, 2023 | Jan 19, 2023 |
| 4 | Insider transaction | Jan 23, 2023 | Jan 19, 2023 |
| 4 | Insider transaction | Jan 23, 2023 | Jan 19, 2023 |
| 4 | Insider transaction | Jan 23, 2023 | Jan 19, 2023 |
| 4 | Insider transaction | Jan 23, 2023 | Jan 19, 2023 |
| 4 | Insider transaction | Dec 30, 2022 | Dec 28, 2022 |
| 4 | Insider transaction | Dec 6, 2022 | Dec 2, 2022 |
| 4 | Insider transaction | Nov 17, 2022 | Nov 15, 2022 |
| 4 | Insider transaction | Oct 31, 2022 | Oct 28, 2022 |
| 4 | Insider transaction | Oct 17, 2022 | Oct 13, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 1, 2022 | — |
| 4 | Insider transaction | Jul 1, 2022 | Jun 29, 2022 |
| 4 | Insider transaction | Jun 30, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 24, 2022 | Jun 22, 2022 |
| 4 | Insider transaction | Jun 24, 2022 | Jun 22, 2022 |
| 4 | Insider transaction | Jun 24, 2022 | Jun 22, 2022 |
| 4 | Insider transaction | Jun 24, 2022 | Jun 22, 2022 |
| 4 | Insider transaction | Jun 24, 2022 | Jun 22, 2022 |
| 4 | Insider transaction | Jun 24, 2022 | Jun 22, 2022 |
| 4 | Insider transaction | Jun 10, 2022 | Jun 8, 2022 |
| 4 | Insider transaction | May 27, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 27, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 27, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 27, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 27, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 27, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 27, 2022 | May 20, 2022 |
| 4 | Insider transaction | May 27, 2022 | May 20, 2022 |
| 4 | Insider transaction | Apr 12, 2022 | Apr 12, 2022 |
| 4 | Insider transaction | Apr 1, 2022 | Mar 31, 2022 |
| 4 | Insider transaction | Mar 21, 2022 | Mar 18, 2022 |
| 3 | Initial insider ownership | Mar 21, 2022 | Mar 18, 2022 |
| 3/A | Form 3/a submission | Mar 21, 2022 | Mar 21, 2022 |
| 4 | Insider transaction | Feb 18, 2022 | Feb 18, 2022 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- LONA (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- Bothell, WA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1620463
- Former names
- Athira Pharma, Inc. (until Jan 8, 2026); M3 Biotechnology, Inc. (until Jan 23, 2019)
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All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.